The document discusses system design for sustainability. It introduces the concept of designing full systems of products and services, rather than individual products, to meet user needs in a sustainable way. This involves innovating the interactions between stakeholders in a system and orienting the overall system design towards sustainability. The document also discusses the need for a new aesthetic of sustainability to promote attractive system innovations and make sustainable solutions more appealing. The designer's role involves facilitating system innovations, interactions between stakeholders, and orienting the system towards sustainability through both functional and aesthetic design.